"123 authors contributed to the papers in this book. A glance at their affiliations shows excellent representation of scientists mostly from North America, Europe, and Japan (with one or two authors each from Australia, New Zealand, India, and China). The book editors, Tom Gleeson, University ofVictoria, Canada, and Steve Ingebritsen, USGS, are among the top thought leaders in the study and understanding of crustal permeability"......"This book represents an excellent resource and reference for any professional earth scientist concerned with earth systems and processes influenced by the flow of fluids." The Leading Edge, April 2017